|It is shown that the standard method of obtaining direct (Jackson) theorems|
for the order of best uniform approximation by algebraic polynomials from
those for trigonometric polynomials also provides inverse (Bernstein) theorems.
Bernstein theorem, inverse theorem, Jackson theorem, direct theorem, Ditzian-Totik moduli of smoothness
Math Review Classification
Primary G41A17, 41A25, 41A27 ; Secondary 30E10, 42A10
9 May 1997
This article is available in: